证明

The former hypothesis is mainly based on mathematical linear extrapolation from effects observed by high doses. This notion advocates the linear assumption of radiation risk and that there is no lower limit to the amount of radiation that causes short- or long-term damage. The latter is the countervailing hypothesis-radiation hormesis.

前者主要依据高辐射剂量效应的观察，用数学线性补插法来求低剂量之效应，主张：辐射剂量会造成短或长期的伤害，且无低限值的；后者的证明来自於广泛的流行病学观察和实验研究的科学资料，这些证明指出辐射对人的伤害有确定的阀值剂量。

In elliptic case,the compactness of"convex polyhedrons"is destinedto be true because of the"local Lipschitz continuity of convex functions",whilein parabolic case,we cannot expect convex-monotone functions have such goodproperties as convex functions.

在广义解存在性的证明中，参考椭圆情形由"凸多面体"逼近的思想，我们采用了由一种特殊构造的"凸单调多面体"逼近的途径，但在证明这种凸单调多面体族的紧性时，我们遇到了困难。

Yu introduced in 1997 the localization Roe algebras , and shown that, to attack the Coarse Baum-Connes Conjecture, it suffices to prove that the local index map is an isomorphism from the coarse K-homology to the K-theory of the localization Roe algebras.

Yu受热方程方法的启发，引入局部化Roe代数，把粗Baum-Connes猜测的证明归结为证明从粗化K-同调群到局部化Roe代数的K-理论群的局部指标映射为同构。

Declaration of the availability in Italy of appropriate lodgings letter of hospitality , lease contract , declaration of lodgement from University or other institutions

在意大利相应的住宿证明接待信，租房协议，学院或其他机构的寄宿证明

The results prove that using the laser power P=1.7Kw, scanning velocity V=4mm/s, spot diameter D=3mm, cladding thickness T=0.6mm, 50%: 50% Ni60:Ni-Cr-Cr_3C_2 as laser cladding process can obtain the laser coating with lubricous tight surface, tiny dilution rate ,fining microstructure and higher micro hardness and fine metallurgical-bonding Interface.

试验结果最终证明，激光熔覆工艺参数对熔覆层的宏观形貌、微观组织及涂层性能有极大的影响，在激光熔覆工艺参数为功率P=7Kw，速度Vs=5mm/S光斑直径D=3mm，厚度T=0.6mm，50%；50%的Ni60；Ni-Cr-Cr_3C_2的条件下，所得到熔覆层表面光滑致密、组织细小均匀、稀释率小、硬度高且与基体实现了良好的冶金结合，证明这种方法是一种在提高热锻模寿命方面有前途的方法。

Taking advantage of a rDNA mutant,rdna-A3,which is of paromomycin resistance marker and has replication predominance over wild type r dna+,we demonstrated that among 10 000 copies of rDNA in the old macronucleus no ne could "leak" into the developing new macromucleus during conjugation.

本文以1种具有强大复制优势而且是抗药性的rDNA分子，rdna-A3，为指标，证明在接合过程中旧大核内上万个rDNA分子没有1个能进入新大核，从而在基因分子水平上证明旧大核的退化是极为彻底的。

It also stipulates that a resident in the mainland wanting to marry a foreigner or a mainlander wanting to marry a resident in Hong Kong, Macao and Taiwan or an overseas Chinese, he or she should get relevant papers from the marital registration department to prove they are single and healthy.

新婚姻法还规定，如果大陆人士想要和外国人结婚，或者是大陆人士要和香港，澳门，台湾或者是海外华侨结婚，他或她应该到婚姻注册部门获取相关的证明，证明他们是否都是单身或健康。

The master tape of the 30-second Wrigley chewing gum advertisement and the certifying letter of China International Broadcast Radio and Television Center, A video tape, to prove Co.

绿箭口香糖30秒广告母带及中国国际广播电台电视中心的证明函，录像带，证明公司是知道公司的

The master tape of the 30-second Wrigley chew ing gum advertisement and the certifying letter of China International Broadcast Radio and Television Center, A video tape, to prove Co.

绿箭口香糖30秒广告母带及中国国际广播电台电视中心的证明函，录像带，证明公司是知道公司的

The most simple mathematical induction is the most common is that n is all natural, an expression of the establishment.

中文摘要：数学归纳法是一种数学证明方法，是数学中关于自然数命题的主要证明方法，用于确定一个表达式在所有自然数范围内成立，或者用于确定一个表达式在一个无穷数列中成立。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！